Here is a post from GCBO's Research Coordinator John Arvin:
I spent the previous two weeks in southern Spain and Gibraltar. This area is one of the most important bird migration corridors in the world because birds migrating between tropical Africa and western Europe are essentially squeezed into a narrow stream to cross the Mediterranean at its narrowest point. An outstanding feature of the migration in this area is that of raptors, storks, and other large bodied species that migrate using rising air currents to move by soaring to conserve energy. It is also an area of extensive wind energy production.
I was struck by how closely the situation there mirrors our own situation on the Gulf coast. We are also located in a globally important migration corridor with a strong component of migrating raptors. The latter is especially concentrated along the western Gulf coast where the flight path is narrow by virtue of being squeezed between the ocean and the north-south mountain chains in northern Mexico. It occurred to me that students of Gulf coast migration and conservationists could learn much about the interaction of large numbers of migrating birds and the wind energy schemes that are planned or actually under development along the Gulf coast, particularly the western Gulf coast of southern Texas.
I tried to meet with a local ornithologist who is a life-long student of the migration in the region of the Straits to talk about their experience but he was away. I will be establishing contact with him and probably other ornithologists in Spain to learn what I can from their experience since most of the published research on the subject of bird – wind turbine interaction has not been carried out in a major migration corridor.